Quote Originally Posted by anikin View Post
Also, consider toning the prints in selenium toner. That should deepen the blacks. I have some papers that are just
blah without toner, but change their look drastically after toning.
+1 for this recommendation. I recommend 1:9 dilution for 2-4 minutes. It will remove the greenish cast and slightly deepen the blacks. Very nice look.

Are you sure your developer is fresh? Most likely a filter issue. Are they faded? If it's a dial in enlarger are you sure it's working correctly??